The number of valence electrons in an at...

The number of valence electrons in an atom with electronic configuration
`1s^2 2s^2 2p^6 3s^2 3p^3 ` is

A

2

B

3

C

5

D

11

Verified by Experts

The correct Answer is:

C

Valence shell `e^(-)` i.e. two in s-subshell and three in p-subshell
Total number of valence shell `e^(-)` are 5.

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